Paypal not responding to rev cgi post

Scott Rossi scott at
Fri Oct 21 00:20:35 CDT 2005

Recently, Thomas McCarthy  wrote:

> I'm trying to implement a PayPal solution to registering my software.
> ...
> Right now, testing with the PayPal sandbox system, I have to say it's good
> enough without verification, and my app isn't something folks are likely to
> spend a lot of time trying to figure out how to steal. Also the initial info I
> read from the PayPal server is probably enough for me to verify on my own--and
> decide if I should withold the key or display it/email it out. Still, loose
> ends make me nervous. Anyone have experience with PayPal?

At first glance, perhaps this might work:

Since your students are first going through your system and storing a unique
key, your CGI could also generate an HTML download page with that key (or
some other unique identifier) as part of the Web address (ie  And since PayPal
allows you to specify a "thank you" page URL among the cart parameters it
receives, you could include the URL of the download page as the thank you
page.  So when a transaction is completed, the user will be automatically
routed to the download page created by your CGI.

Maybe I'm missing something but this seems like an option.

Scott Rossi
Creative Director
Tactile Media, Multimedia & Design
E: scott at

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